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AstDyS ∴ Objects ∴ 1981ER42 ∴ Summary
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(17394) 1981ER42  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 3.07796 1.884e-08 au
e 0.10121 4.092e-08
i 1.556 4.754e-06 deg
Ω 12.31 0.0001574 deg
ω 25.622 0.0001595 deg
M 118.094 2.503e-05 deg

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Other useful info
Absolute Magnitude (H)    13.9 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7664 au
Aphelion 3.3895 au
Asc. node-Earth separation 1.79178 au
Desc. node-Earth separation 2.35095 au
Earth MOID 1.77318 au
Orbital period 1972.39 days
Date of orbit computation  Oct 31 05:07
Observational summary
Optical observations (Discarded) 1189 (9)
Radar observations (Discarded) 0 (0)
Arc length 14457.3 days
Unobserved 265 days

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Ephemeris at epoch 58507 MJD
Right Ascension 198.015 deg
Declination -7.31857 deg
V Magnitude 19.79 mag
Solar Elongation 104.03 deg
Galactic Latitude 55.19 deg
Rate 0.085 deg/day
Direction 114.441 deg

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